button does not occur any action

Hi,

I want to ask, why every time I fill in the login form, register or password reset, then click the button does not happen any action?

why this happened? have long used UM but this is the first time experiencing this problem suddenly. Please help. thank you

link image (login): https://prnt.sc/kgxngx
link image (register): http://prntscr.com/kgxo2b
link image (password reset): http://prntscr.com/kgxofe

The page I need help with: [log in to see the link]